but on the UK models the t stat is on the bottom hose under the alternator and you also have to remove the drive belt. I've bought the haynes manual and that is the description , the photos are not too clear though. Anyway, problem solved. Thanks againThanks Digital Jedi,
but on the UK models the t stat is on the bottom hose under the alternator and you also have to remove the drive belt. I've bought the haynes manual and that is the description , the photos are not too clear though. Anyway, problem solved. Thanks again

It is near where the top radiator hose connects to the engine, ask the parts people to show you the parts diagram when you buy the part, why are you replacing it, I am a Ford factory tech and have never seen a T-stat fail in the Focus.It is near where the top radiator hose connects to the engine, ask the parts people to show you the parts diagram when you buy the part, why are you replacing it, I am a Ford factory tech and have never seen a T-stat fail in the Focus.

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I just replaced the T-stat on my 2003 Focus ZX3 last weekend. I'm a novice; it was easy. You shouldn't have to remove anything except the T-stat housing. It's located on the right side of the block, across from the battery. You need a 10 mm wrench to remove the three bolts holding the housing onto the block. Removing the four hoses was the most difficult part. When they're off, the housing unit slides under and out. The T-stat and O-ring cost $20.

Is the thermostat the correct temperature rating. It should have a temperature listed on the thermostat, and does it fit the cavitity the old one came out of.
If the answer is yes then its a matter of the correct gasket. Call the dealer and ask them. Remember sometime the manufacturer change certain parts
they are not required to tell anyone they had. You might be getting an upgrade (as long as it fits the cavity for the thermostat.)
If the rating on the new thermostat is different from the old one and it doesn't fit the cavity then bring it back and show the dearler what came out of the vehicle . The same with the gasket.

drain oil using allen key plug underneath gearbox till all oil is drained refit use new seal if old 1 is damaged then look at front of g/box quater of the way up is another allen key plug remove fill with new oil till it starts to run out hole refit plug and ur done

IF YOU LOOK UNDER THE CAR, NEAR THE ALTERNATOR YOU WILL SEE A PLASTIC HOUSING WITH 2 PIPES LEADING ONTO IT. THE THERMOSTAT SITS IN THAT. JUST BE CAREFUL YOU DONT SNAP THE BOLTS WHEN REMOVING THE HOUSING.THE HOUSING ITSELF CAN BECOME WARPED OR CRACKED AND LEAK FLUID, A COMMON PROBLEM WITH THE FOCUS. THE HOUSING COSTS AROUND £15 AND A THERMOSTAT ABOUT £6. GOOD LUCK.